Molecular distillation feeding valve

Abstract

The invention belongs to the technical field of valves, and particularly relates to a molecular distillation feeding valve which comprises a valve body, one end of the valve body is slidably connected with a feeding pipe, the end, away from the feeding pipe, of the valve body is fixedly connected with a discharging pipe, and the end, close to the feeding pipe, of the valve body and the end, close to the discharging pipe, of the valve body are each provided with a sealing kit. And a reinforced sealing device is arranged on the outer wall of the valve body. According to the molecular distillation feeding valve, through the use of a reinforcing sealing device and a telescopic assembly, in the rotating process of a valve element of a valve body, fluid in the valve body is extruded, the pressure in the valve body is increased, at the moment, a piston ring slides, air in a limiting groove is extruded into an air chamber, meanwhile, a feeding pipe moves, a T-shaped rod pulls a connecting spring to be stretched, and the valve element of the valve body rotates. Therefore, the size of the feeding position of the valve body is increased, the pressure in the valve body is reduced, the protection effect on parts in the valve body is achieved, the service life of the parts in the valve body is prolonged, and then the influence on the sealing performance of the valve body is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and specifically to a molecular distillation feed valve. Background Technique

[0002] In the general molecular distillation process, its feeding is generally carried out by a vacuum feeding pump. During the feeding process, the feeding speed is controlled by adjusting the size of the feed valve. Among them, the electric ball valve is a relatively common type of feed valve. The electric ball valve is composed of an electric actuator and a ball valve, and is a pipeline pressure element for industrial automation process control, usually used for remote opening and closing (connecting and cutting off the medium) control of pipeline media.

[0003] Currently, in the prior art, when controlling the size of the feed, the ball valve is rotated to control the opening, and then the size of the feed is controlled. However, when the ball of the ball valve moves, the fluid in the valve body will be squeezed, resulting in an increase in pressure in the valve body, and then impacting the parts in the valve body. In the long run, this impact will cause damage to the parts in the valve body and affect the subsequent sealing performance of the valve body. In view of this, we propose a molecular distillation feed valve. Summary of the Invention

[0004] The main object of the present invention is to provide a molecular distillation feed valve that can solve the problems raised in the above background technique.

[0005] To achieve the above object, the molecular distillation feed valve proposed by the present invention includes a valve body. One end of the valve body is slidably connected to a feed pipe, and the end of the valve body away from the feed pipe is fixedly connected to a discharge pipe. Sealing kits are provided at both the end of the valve body close to the feed pipe and the end of the valve body close to the discharge pipe. A strengthened sealing device is provided on the outer wall of the valve body. Both the end of the feed pipe away from the valve body and the end of the discharge pipe away from the valve body are fixedly connected with connection components, and a telescopic component is provided between the connection components. The strengthened sealing device includes: An air chamber fixedly connected to the outer wall of the valve body; A piston piece piston-connected to the inner wall of the air chamber, and the piston piece is elastically connected to the inner wall of the air chamber through a connecting spring; A through pipe, one end of which is communicated with the air chamber, and the other end of which penetrates the valve body. The end of the air chamber away from the through pipe is communicated with a supplementary air pipe, and the end of the supplementary air pipe away from the air chamber is communicated with a sealing air cushion; And an explosion-proof component provided outside the air chamber. By using the explosion-proof component, the air pressure in the air chamber can be ensured to be stable.

[0006] Preferably, two sets of the sealing kits are provided, and the two sets of the sealing kits are penetrated by the feed pipe and the discharge pipe. By using the sealing kits, the sealing performance when the feed pipe and the discharge pipe are connected to the valve body can be improved.

[0007] Preferably, the explosion-proof component includes a fixed pipe. One end of the fixed pipe communicates with the air chamber. The other end of the fixed pipe is fixedly connected with a through ring. The through ring is slidably connected to the inner wall of the sleeve. The through ring and the bottom inner wall of the sleeve are elastically connected by a return spring. Gas can enter the sleeve through the fixed pipe and the through ring, jack up the sleeve, and then collect the excess gas.

[0008] Preferably, the telescopic component includes a sleeve rod. One end of the sleeve rod is sleeved with a T rod. The other end of the sleeve rod is fixedly connected with a connecting rod. The T rod and the inner wall of the sleeve rod are elastically connected by a telescopic spring. When the fluid in the valve body is squeezed and the pressure in the valve body increases, the feed pipe moves at this time, and the T rod pulls the connecting spring to stretch, thereby increasing the volume at the feed part of the valve body and reducing the pressure received in the valve body, achieving the protective effect on the parts in the valve body.

[0009] Preferably, the connecting component includes a first connecting piece. A positioning block is fixedly connected to the outer wall of the first connecting piece. The first connecting piece is detachably connected to a second connecting piece by a bolt. A positioning groove is opened on the side of the second connecting piece close to the first connecting piece. Under the action of the positioning block and the positioning groove, the mounting holes of the first connecting piece and the second connecting piece can be stably aligned, facilitating the subsequent fixing of the first connecting piece and the second connecting piece, and further stably connecting the valve pipe of the valve body and the connecting pipe.

[0010] Preferably, the size of the positioning groove matches that of the positioning block. Two sets of the first connecting pieces are provided. One end of the connecting rod away from the sleeve rod is fixedly connected to the outer wall of one of the first connecting pieces. One end of the T rod away from the sleeve rod is fixedly connected to the outer wall of the other first connecting piece.

[0011] Preferably, a limiting groove is opened on the inner wall of the valve body. One end of the through pipe away from the air chamber communicates with the limiting groove, and nitrogen is filled in the limiting groove.

[0012] Preferably, a piston ring is fixedly connected to one end of the feed pipe close to the valve body. The piston ring is slidably connected in the limiting groove. By using the piston ring, during the sliding process of the piston ring, the nitrogen in the limiting groove can enter the air chamber through the through pipe.

[0013] Preferably, the sealing air cushion is inlaid and installed inside the valve body, and the sealing air cushion is located on both sides of the valve core. By using the sealing air cushion, the sealing performance of the valve body during use can be effectively improved.

[0014] Preferably, two sets of the enhanced sealing devices are provided, and the two sets of the enhanced sealing devices are symmetrically arranged with the center line of the valve body as the axis of symmetry.

[0015] The present invention provides a molecular distillation feed valve, which has the following beneficial effects: (1). During the rotation of the valve core of the valve body by using the enhanced sealing device and the telescopic assembly in the molecular distillation feed valve, the fluid in the valve body is squeezed, and the pressure in the valve body increases. At this time, the piston ring slides to squeeze the air in the limit groove into the air chamber. Meanwhile, the feed pipe moves, and the T-bar pulls the connecting spring to stretch, thereby increasing the volume at the feed part of the valve body and reducing the pressure received in the valve body, achieving the protective effect on the parts in the valve body, extending the service life of the parts in the valve body, and further reducing the influence on the sealing performance of the valve body.

[0016] (2). During the rotation of the valve core of the valve body by using the enhanced sealing device in the molecular distillation feed valve, the air in the limit groove is squeezed into the air chamber, which causes the piston piece to move, squeezing the gas in the air chamber into the sealing air cushion, making the sealing air cushion closely adhere to the valve core and improving its sealing effect.

[0017] (3). After the sealing air cushion closely adheres to the valve core by using the explosion-proof assembly in the molecular distillation feed valve, the excess gas can enter the sleeve through the fixed pipe and the through ring, jacking up the sleeve, so that the excess gas is collected. After the piston ring is reset later, the gas can enter the limit groove again to achieve air pressure balance.

[0018] (4). By using the connecting assembly in the molecular distillation feed valve, under the action of the positioning block and the positioning groove, the mounting holes of the first connecting piece and the second connecting piece can be stably aligned, facilitating the subsequent fixation of the first connecting piece and the second connecting piece, and further stably connecting the valve pipe of the valve body with the connecting pipe, which is applicable to positions with narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the whole of the present invention; Figure 3 For the present invention Figure 2Schematic diagram of structure A in [the invention]; Figure 4 Schematic diagram of the overall partial sectional structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of structure B in [the invention]; Figure 6 Schematic diagram of the split structure of connecting piece 1 and connecting piece 2 of the present invention; Figure 7 Schematic diagram of connecting piece 2 of the present invention.

[0021] Explanation of the reference numerals in the attached drawings: 1. Valve body; 2. Feed pipe; 3. Discharge pipe; 4. Sealing kit; 5. Reinforced sealing device; 6. Telescopic assembly; 7. Connecting assembly; 101. Limit groove; 21. Piston ring; 51. Air chamber; 52. Piston piece; 53. Through pipe; 54. Supplementary air pipe; 55. Sealing air cushion; 56. Explosion-proof assembly; 561. Fixed pipe; 562. Through ring; 563. Sleeve; 61. Sleeve rod; 62. T-bar; 63. Connecting rod; 71. Connecting piece 1; 72. Positioning block; 73. Connecting piece 2; 74. Positioning groove.

[0022] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the attached drawings. Embodiment

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0024] Please refer to Figures 1-7, the present invention provides a molecular distillation feed valve, which includes a valve body 1. One end of the valve body 1 is slidably connected to a feed pipe 2, and the end of the valve body 1 away from the feed pipe 2 is fixedly connected to a discharge pipe 3. Sealing kits 4 are provided at both the end of the valve body 1 close to the feed pipe 2 and the end of the valve body 1 close to the discharge pipe 3. There are two sets of sealing kits 4, and the two sets of sealing kits 4 are penetrated by the feed pipe 2 and the discharge pipe 3. By using the sealing kits 4, the sealing performance when the feed pipe 2 and the discharge pipe 3 are connected to the valve body 1 can be improved. A strengthened sealing device 5 is provided on the outer wall of the valve body 1. By using the strengthened sealing device 5, when the valve core moves, the sealing performance of the valve core can be improved, and further the sealing effect during the use of the device can be improved. Fixedly connected to both the end of the feed pipe 2 away from the valve body 1 and the end of the discharge pipe 3 away from the valve body 1 are connection components 7. By using the connection components 7, it is convenient to stably connect the valve pipe of the valve body 1 to the connection pipeline later, and it is suitable for positions with narrow space. A telescopic component 6 is provided between the connection components 7. By using the telescopic component 6, during the rotation of the valve core of the valve body 1, the fluid in the valve body 1 is squeezed, the pressure in the valve body 1 increases. At this time, the feed pipe 2 moves, increasing the volume at the feed part of the valve body 1, reducing the pressure received in the valve body 1, achieving the protective effect on the parts in the valve body 1, extending the service life of the parts in the valve body 1, and further reducing the impact on the sealing performance of the valve body 1.

[0025] In an embodiment of the present invention, in order to strengthen the sealing performance of the valve core during use, specifically, a limiting groove 101 is opened on the inner wall of the valve body 1. One end of the feed pipe 2 close to the valve body 1 is fixedly connected to a piston ring 21, and the piston ring 21 is slidably connected in the limiting groove 101. Nitrogen is filled in the limiting groove 101. The strengthened sealing device 5 includes an air chamber 51, and the air chamber 51 is fixedly connected to the outer wall of the valve body 1. A piston piece 52 is connected to the piston in the inner wall of the air chamber 51, and the piston piece 52 is elastically connected to the inner wall of the air chamber 51 through a connecting spring. The air chamber 51 is communicated with the air chamber 51. The end of the through pipe 53 away from the air chamber 51 penetrates the valve body 1, and the end of the through pipe 53 away from the air chamber 51 is communicated with the limiting groove 101. By using the piston ring 21, during the sliding process of the piston ring 21, the nitrogen in the limiting groove 101 can enter the air chamber 51 through the through pipe 53. One end of the air chamber 51 away from the through pipe 53 is communicated with a supplementary air pipe 54, and one end of the supplementary air pipe 54 away from the air chamber 51 is communicated with a sealing air cushion 55. The sealing air cushion 55 is inlaid and installed inside the valve body 1, and the sealing air cushion 55 is located on both sides of the valve core. During the rotation of the valve core of the valve body 1, the fluid in the valve body 1 is squeezed, and the pressure in the valve body 1 increases. At this time, the piston ring 21 slides, squeezing the air in the limiting groove 101 into the air chamber 51, causing the piston piece 52 to move, squeezing the gas in the air chamber 51 into the sealing air cushion 55, making the sealing air cushion 55 closely attached to the valve core, and improving its sealing effect.

[0026] Furthermore, to prevent the increased pressure in the valve body 1 from impacting the valve body 1 and causing damage to the parts in the valve body 1. Specifically, the telescopic assembly 6 includes a sleeve rod 61. One end of the sleeve rod 61 is sleeved with a T-rod 62, and the other end of the sleeve rod 61 is fixedly connected to a connecting rod 63. The T-rod 62 is elastically connected to the inner wall of the sleeve rod 61 through a telescopic spring. When the pressure in the valve body 1 increases, the piston ring 21 is squeezed and slides, thereby causing the feed pipe 2 to move. The T-rod 62 pulls the connecting spring to stretch, thereby increasing the volume at the feed port of the valve body 1 and reducing the pressure received in the valve body 1, achieving the protective effect on the parts in the valve body 1, extending the service life of the parts in the valve body 1, and further reducing the impact on the sealing performance of the valve body 1.

[0027] Furthermore, to prevent the excessive gas pressure in the air chamber 51 due to a large amount of gas in the air chamber 51. Specifically, the explosion-proof assembly 56 includes a fixed pipe 561. One end of the fixed pipe 561 is communicated with the air chamber 51, and the other end of the fixed pipe 561 is fixedly connected to a through-ring 562. The through-ring 562 is slidably connected to the inner wall of the sleeve 563. The through-ring 562 is elastically connected to the bottom inner wall of the sleeve 563 through a return spring. By using the return spring, it is convenient for the sleeve 563 to reset. When the gas in the air chamber 51 is squeezed into the sealing air cushion 55 and the sealing air cushion 55 is in close contact with the valve core, the excess gas can enter the sleeve 563 through the fixed pipe 561 and the through-ring 562, pushing the sleeve 563 up, thereby collecting the excess gas. After the piston ring 21 resets, it is convenient for the gas to enter the limit groove 101 again to achieve air pressure balance.

[0028] In addition, to enable the valve pipe of the valve body 1 to be quickly connected to the connecting pipe and be convenient for use in a narrow space. Specifically, the connecting assembly 7 includes a first connecting piece 71. A positioning block 72 is fixedly connected to the outer wall of the first connecting piece 71. The first connecting piece 71 is detachably connected to a second connecting piece 73 through a bolt. A positioning groove 74 is formed on the side of the second connecting piece 73 close to the first connecting piece 71. The size of the positioning groove 74 matches that of the positioning block 72. There are two groups of the first connecting pieces 71. One end of the connecting rod 63 away from the sleeve rod 61 is fixedly connected to the outer wall of one group of the first connecting pieces 71, and one end of the T-rod 62 away from the sleeve rod 61 is fixedly connected to the outer wall of the other group of the first connecting pieces 71. By aligning the positioning block 72 with the positioning groove 74 and then fitting the first connecting piece 71 and the second connecting piece 73 together, the mounting holes of the first connecting piece 71 and the second connecting piece 73 can be stably aligned, facilitating the subsequent fixation of the first connecting piece 71 and the second connecting piece 73, enabling the stable connection of the valve pipe of the valve body 1 and the connecting pipe, and being applicable to narrow spaces.

[0029] During use, the output shaft of the motor rotates, causing the valve core of the valve body 1 to rotate. During this process, the fluid in the valve body 1 is squeezed, the pressure in the valve body 1 increases, and then the piston ring 21 is driven to slide in the limit groove 101, squeezing the air in the limit groove 101 into the air chamber 51, causing the piston piece 52 to move, squeezing the gas in the air chamber 51 into the sealing air cushion 55, so that the sealing air cushion 55 is in close contact with the valve core. After the sealing air cushion 55 is in close contact with the valve core, the excess gas can enter the sleeve 563 through the fixed pipe 561 and the through ring 562, jacking up the sleeve 563, and then the excess gas is collected, which is convenient for the subsequent reset of the piston ring 21, and the gas can enter the limit groove 101 again to achieve air pressure balance; At the same time, when the pressure in the valve body 1 increases, the piston ring 21 is squeezed and slides, which in turn causes the feed pipe 2 to move, and the T-bar 62 pulls the connecting spring to stretch, thereby increasing the volume at the feed port of the valve body 1 and reducing the pressure received in the valve body 1, realizing the protection of the parts in the valve body 1; At the same time, when the valve pipe of the valve body 1 is connected to the connecting pipe, the second connecting piece 73 is fixed at the port of the connecting pipe, then the positioning block 72 is aligned with the positioning groove 74, and then the first connecting piece 71 is fitted with the second connecting piece 73, so that the mounting holes of the first connecting piece 71 and the second connecting piece 73 can be stably aligned, and then the first connecting piece 71 and the second connecting piece 73 are fixed by bolts.

[0030] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A molecular distillation feed valve, comprising a valve body (1), characterized in that: One end of the valve body (1) is slidably connected to a feed pipe (2), one end of the valve body (1) far from the feed pipe (2) is fixedly connected to a discharge pipe (3), sealing kits (4) are arranged at one end of the valve body (1) close to the feed pipe (2) and one end of the valve body (1) close to the discharge pipe (3), a strengthened sealing device (5) is arranged on the outer wall of the valve body (1), connection components (7) are fixedly connected to one end of the feed pipe (2) far from the valve body (1) and one end of the discharge pipe (3) far from the valve body (1), a telescopic component (6) is arranged between the connection components (7), and the strengthened sealing device (5) comprises: An air chamber (51), which is fixedly connected to the outer wall of the valve body (1); A piston piece (52), which is piston-connected to the inner wall of the air chamber (51), and the piston piece (52) is elastically connected to the inner wall of the air chamber (51) through a connection spring; A through pipe (53), one end of which is communicated with the air chamber (51), the other end of which penetrates through the valve body (1), a supplementary air pipe (54) is communicated with one end of the air chamber (51) far from the through pipe (53), and a sealing air cushion (55) is communicated with one end of the supplementary air pipe (54) far from the air chamber (51); And an explosion-proof component (56), which is arranged outside the air chamber (51).

2. The molecular distillation feed valve according to claim 1, characterized in that: Two groups of the sealing kits (4) are arranged, and the two groups of the sealing kits (4) are penetrated by the feed pipe (2) and the discharge pipe (3).

3. The molecular distillation feed valve according to claim 1, characterized in that: The explosion-proof component (56) comprises a fixed pipe (561), one end of which is communicated with the air chamber (51), the other end of which is fixedly connected to a through ring (562), the through ring (562) is slidably connected to the inner wall of a sleeve (563), and the through ring (562) is elastically connected to the bottom inner wall of the sleeve (563) through a return spring.

4. The molecular distillation feed valve according to claim 1, characterized in that: The telescopic component (6) comprises a sleeve rod (61), one end of which is sleeved with a T rod (62), the other end of which is fixedly connected to a connecting rod (63), and the T rod (62) is elastically connected to the inner wall of the sleeve rod (61) through a telescopic spring.

5. The molecular distillation feed valve according to claim 4, characterized in that: The connection component (7) comprises a first connection piece (71), a positioning block (72) is fixedly connected to the outer wall of the first connection piece (71), the first connection piece (71) is detachably connected to a second connection piece (73) through a bolt, and a positioning groove (74) is formed on one side of the second connection piece (73) close to the first connection piece (71).

6. The molecular distillation feed valve according to claim 5, characterized in that: The positioning groove (74) matches the size of the positioning block (72). There are two sets of the first connecting pieces (71). One end of the connecting rod (63) far from the sleeve rod (61) is fixedly connected to the outer wall of one set of the first connecting pieces (71), and one end of the T-shaped rod (62) far from the sleeve rod (61) is fixedly connected to the outer wall of the other set of the first connecting pieces (71).

7. The molecular distillation feed valve according to claim 1, characterized in that: A limiting groove (101) is formed on the inner wall of the valve body (1), and one end of the through pipe (53) far from the air chamber (51) communicates with the limiting groove (101).

8. The molecular distillation feed valve according to claim 7, characterized in that: One end of the feed pipe (2) close to the valve body (1) is fixedly connected with a piston ring (21), and the piston ring (21) is slidably connected in the limiting groove (101).

9. The molecular distillation feed valve according to claim 1, characterized in that: The sealing air cushion (55) is inlaid and installed inside the valve body (1), and the sealing air cushion (55) is located on both sides of the valve core.

10. The molecular distillation feed valve according to claim 1, characterized in that: There are two sets of the enhanced sealing devices (5), and the two sets of the enhanced sealing devices (5) are symmetrically arranged with the center line of the valve body (1) as the axis of symmetry.

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